Question about HP Pavilion zd8000 Notebook

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My laptop was hit by a power surge through my modem, then i had a loud taping sound coming from my front speakers and now none of my speakers are working and my headphone jack does not work either.

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Itwouldn get a power surge from a modem because power doesnt go from the modem to the laptop or vice versa, only data signals ... i think you would need to replace the card sound and/or speakers

Posted on May 29, 2011

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The power surge probably did damage to your motherboard. if it only blew out your sound then you are lucky. most motherboards dont survive this well. since this is a laptop there isnt anything you can do about it. sorry

Posted on May 29, 2011

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2001 Pontiac Grand Am Car Audio Wiring Diagram kenwood kdc-mp342u
Car Radio Battery Constant 12v+ Wire: Orange yellow
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I just bought a Panasonic SA-PT480, set it up, step by step per the manual, powered through 2 surge protectors( the second surge protector is used to completely cut power to devices that dont need constant...


I can't find a manual for this thing, which I believe is part of the SC-PT480 package.

I'd plug it straight into a wall outlet for further fault isolation and treat it like it has never worked, no assumptions.

Surge protectors only address outside power surges. Overheating, speaker shorts yada yada can still happen. Effective self-protection circuitry activation need not be preceded by smoke and light shows.

When the audio cut off did the unit also die, or did it look otherwise alive? If the former...

Generally speaking, an amp protects itself from heat, shorts and overloads by refusing to turn on or stay on.


Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.


Check for loose speaker connections as a root cause for intermittent shutdown.


Maybe a sleep timer clicked it off. Or if it seems to power on but remains silent some other setting like muting, tape monitor got activated. Or the source audio died. Lots of things.

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Check for the tape monitor being on or amp mute type function. Larry's Electronics

Apr 27, 2010 | Audio Players & Recorders

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Only the front speakers work none of the surround speakers


If you are still covered by the warrenty, then you may be able to get it fixed at no cost.

Otherwise get a qualified technician (I say this to cover my but rather than suggesting that you open it up yourself) to open it up and check the fuses inside.

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If your laptop has no port for a phone line, there is no modem. I am assuming you want to use your laptop with dial-up internet service. You will need to add a modem(there is no adapter to do this job), there are many connection types for external modems nowadays, PCMCIA, ExpressCard, USB are some examples. USB is the most popular, like the one at the top of this page: http://www.zoom.com/products/dial_up_external_usb.html

Hopefully this helps.

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Static noise coming out of speakers


What sort of computer do you have? Is it a laptop or desktop? Many laptops have this problem and it is quite widespread in laptops. The crackling or humming noise could be a result of interference from the mains power signal.

If it's a laptop, try running it on battery alone (take out the mains power cord). My laptop has this kind of noise in speakers when running on mains electrical supply, but it goes away like magic when I run it on battery.

A more long-term solution is to buy a 'Ground Loop Isolator' and insert it between your computer and the speakers/earphones. They are quite cheap and you could get it for under £10. It removes all static noise and you'll hear crystal clear sound.

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2 Answers

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unsolder the speaker, its the black can with the hole in it. No other method unless it attaches to the sound card via a cable.

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Laptop speaker


You need to install the drivers for your soundcard. Try to find out what model of soundcard do you have and what version of Windows and try to search for the specific driver on the internet.
You can try these websites:
http://www.driverguide.com/
http://www.soft32.com/c/Windows/Drivers/2-52.html
Here's a tutorial on how to install a driver: http://www.totallydrivers.com/resources/directions_installation.asp
If you still can't hear sound try these steps, maybe it's not from your soundcard:
-Plug in the speakers
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-Turn-up the volume in Windows and on the speakers.
-Uncheck the mute checkbox in sound control panel.
-Verify a sound should be playing. In the Control Panel, play some Windows sounds. Play a music CD.
-Plug the speakers into the right hole on the sound card.
-Are the speakers plugged into the sound card and not the MODEM?
-Is the sound card installed correctly?
-Is the power converter for the speakers plugged into a wall outlet or surge protector?
-Is the power converter plugged into the speakers?
-Try other speakers or a head phone?

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It definitely sounds like it took a surge. yhe Power Amop IC in those things are pretty sensitive. Any decent repair shop should be able to repair it for under $125.

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